﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApp3
{
    class StringUtil
    {
        public static bool EoL4(string b)
        {
            bool a = false;
            if (b.Equals("null") || b.Equals(""))
            {
                a = true;
            }
            int index = 0;
            foreach (char c in b)
            {
                if (c == ' ')
                {
                    index++;
                }
            }

            if (index == b.Length)
            {
                a = true;
            }
            Console.WriteLine(a);
            return a;
        }
    }
}